Kim Ashley Y, Donohoo Samantha A, Gosliner Terrence M
Department of Invertebrate Zoology and Geology, California Academy of Sciences, San Francisco, California, United States.
School of Biological Sciences, Section of Ecology, Behavior, and Evolution, University of California, San Diego, La Jolla, California, United States.
PeerJ. 2024 Dec 13;12:e18517. doi: 10.7717/peerj.18517. eCollection 2024.
The tropical Indo-Pacific aeolid nudibranchs of the Fionidae are poorly known and have not been studied in a concerted manner. Many undescribed species are found throughout the Indian and Pacific Oceans and are concentrated in the Coral Triangle. With the recent publication of a revised systematic arrangement of the Fionidae, documentation and description of new taxa of Fionidae is especially warranted. Here we describe Kim & Gosliner sp. nov., Kim & Gosliner sp. nov., Kim & Gosliner sp. nov., Kim & Gosliner, sp. nov. and Gosliner & Kim sp. nov. from the waters of the Coral Triangle. Their phylogenetic placement in Fionidae is reviewed using three genes: cytochrome oxidase I (COI), 16s rRNA, and histone 3 (H3) in a Bayesian and maximum likelihood framework. A redescription of (Hamatani, 1993) is also provided to clarify its distinctiveness from and . . This study confirms that all four known species of are characterized by having an acutely pointed curved penial stylet, thus confirming a unique morphological synapomorphy for members of this genus. A discussion on conflicts in the classification of fionid aeolid nudibranchs addresses concerns with extreme splitting based on novel innovations that emphasize evolutionary novelty over phyletic kinship. Instead, a more conservative approach is suggested, especially within the context of taxa that still have much undocumented primary diversity.
菲奥尼科家族的热带印度洋 - 太平洋海蛞蝓鲜为人知，且尚未得到系统的研究。在印度洋和太平洋发现了许多未描述的物种，它们集中在珊瑚三角区。随着最近菲奥尼科家族修订后的系统分类安排的发表，对菲奥尼科家族新分类单元的记录和描述尤为必要。在此，我们描述了来自珊瑚三角区水域的金氏与戈斯林新物种1、金氏与戈斯林新物种2、金氏与戈斯林新物种3、金氏与戈斯林新物种4以及戈斯林与金氏新物种。在贝叶斯和最大似然框架下，利用细胞色素氧化酶I（COI）、16s rRNA和组蛋白3（H3）这三个基因对它们在菲奥尼科家族中的系统发育位置进行了评估。同时，还对（滨谷，1993）进行了重新描述，以阐明其与其他物种的区别。本研究证实，菲奥尼科家族所有已知的四个物种都具有尖锐弯曲的阴茎针，从而确认了该属成员独特的形态共衍征。关于菲奥尼科海蛞蝓分类冲突的讨论涉及到基于强调进化新奇性而非系统亲缘关系的新特征进行极端分类划分的问题。相反，建议采用更保守的方法，特别是在那些仍有许多未记录的主要多样性的分类单元的背景下。
